/* * Samsung S5P/EXYNOS4 SoC series camera interface (camera capture) driver * * Copyright (C) 2010 - 2012 Samsung Electronics Co., Ltd. * Sylwester Nawrocki * * This program is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License version 2 as * published by the Free Software Foundation. */ #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include "fimc-mdevice.h" #include "fimc-core.h" #include "fimc-reg.h" static int fimc_capture_hw_init(struct fimc_dev *fimc) { struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct fimc_pipeline *p = &fimc->pipeline; struct fimc_sensor_info *sensor; unsigned long flags; int ret = 0; if (p->subdevs[IDX_SENSOR] == NULL || ctx == NULL) return -ENXIO; if (ctx->s_frame.fmt == NULL) return -EINVAL; sensor = v4l2_get_subdev_hostdata(p->subdevs[IDX_SENSOR]); spin_lock_irqsave(&fimc->slock, flags); fimc_prepare_dma_offset(ctx, &ctx->d_frame); fimc_set_yuv_order(ctx); fimc_hw_set_camera_polarity(fimc, sensor->pdata); fimc_hw_set_camera_type(fimc, sensor->pdata); fimc_hw_set_camera_source(fimc, sensor->pdata); fimc_hw_set_camera_offset(fimc, &ctx->s_frame); ret = fimc_set_scaler_info(ctx); if (!ret) { fimc_hw_set_input_path(ctx); fimc_hw_set_prescaler(ctx); fimc_hw_set_mainscaler(ctx); fimc_hw_set_target_format(ctx); fimc_hw_set_rotation(ctx); fimc_hw_set_effect(ctx); fimc_hw_set_output_path(ctx); fimc_hw_set_out_dma(ctx); if (fimc->variant->has_alpha) fimc_hw_set_rgb_alpha(ctx); clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); } spin_unlock_irqrestore(&fimc->slock, flags); return ret; } /* * Reinitialize the driver so it is ready to start the streaming again. * Set fimc->state to indicate stream off and the hardware shut down state. * If not suspending (@suspend is false), return any buffers to videobuf2. * Otherwise put any owned buffers onto the pending buffers queue, so they * can be re-spun when the device is being resumed. Also perform FIMC * software reset and disable streaming on the whole pipeline if required. */ static int fimc_capture_state_cleanup(struct fimc_dev *fimc, bool suspend) { struct fimc_vid_cap *cap = &fimc->vid_cap; struct fimc_vid_buffer *buf; unsigned long flags; bool streaming; spin_lock_irqsave(&fimc->slock, flags); streaming = fimc->state & (1 << ST_CAPT_ISP_STREAM); fimc->state &= ~(1 << ST_CAPT_RUN | 1 << ST_CAPT_SHUT | 1 << ST_CAPT_STREAM | 1 << ST_CAPT_ISP_STREAM); if (suspend) fimc->state |= (1 << ST_CAPT_SUSPENDED); else fimc->state &= ~(1 << ST_CAPT_PEND | 1 << ST_CAPT_SUSPENDED); /* Release unused buffers */ while (!suspend && !list_empty(&cap->pending_buf_q)) { buf = fimc_pending_queue_pop(cap); vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); } /* If suspending put unused buffers onto pending queue */ while (!list_empty(&cap->active_buf_q)) { buf = fimc_active_queue_pop(cap); if (suspend) fimc_pending_queue_add(cap, buf); else vb2_buffer_done(&buf->vb, VB2_BUF_STATE_ERROR); } fimc_hw_reset(fimc); cap->buf_index = 0; spin_unlock_irqrestore(&fimc->slock, flags); if (streaming) return fimc_pipeline_s_stream(&fimc->pipeline, 0); else return 0; } static int fimc_stop_capture(struct fimc_dev *fimc, bool suspend) { unsigned long flags; if (!fimc_capture_active(fimc)) return 0; spin_lock_irqsave(&fimc->slock, flags); set_bit(ST_CAPT_SHUT, &fimc->state); fimc_deactivate_capture(fimc); spin_unlock_irqrestore(&fimc->slock, flags); wait_event_timeout(fimc->irq_queue, !test_bit(ST_CAPT_SHUT, &fimc->state), (2*HZ/10)); /* 200 ms */ return fimc_capture_state_cleanup(fimc, suspend); } /** * fimc_capture_config_update - apply the camera interface configuration * * To be called from within the interrupt handler with fimc.slock * spinlock held. It updates the camera pixel crop, rotation and * image flip in H/W. */ static int fimc_capture_config_update(struct fimc_ctx *ctx) { struct fimc_dev *fimc = ctx->fimc_dev; int ret; fimc_hw_set_camera_offset(fimc, &ctx->s_frame); ret = fimc_set_scaler_info(ctx); if (ret) return ret; fimc_hw_set_prescaler(ctx); fimc_hw_set_mainscaler(ctx); fimc_hw_set_target_format(ctx); fimc_hw_set_rotation(ctx); fimc_hw_set_effect(ctx); fimc_prepare_dma_offset(ctx, &ctx->d_frame); fimc_hw_set_out_dma(ctx); if (fimc->variant->has_alpha) fimc_hw_set_rgb_alpha(ctx); clear_bit(ST_CAPT_APPLY_CFG, &fimc->state); return ret; } void fimc_capture_irq_handler(struct fimc_dev *fimc, int deq_buf) { struct fimc_vid_cap *cap = &fimc->vid_cap; struct fimc_vid_buffer *v_buf; struct timeval *tv; struct timespec ts; if (test_and_clear_bit(ST_CAPT_SHUT, &fimc->state)) { wake_up(&fimc->irq_queue); goto done; } if (!list_empty(&cap->active_buf_q) && test_bit(ST_CAPT_RUN, &fimc->state) && deq_buf) { ktime_get_real_ts(&ts); v_buf = fimc_active_queue_pop(cap); tv = &v_buf->vb.v4l2_buf.timestamp; tv->tv_sec = ts.tv_sec; tv->tv_usec = ts.tv_nsec / NSEC_PER_USEC; v_buf->vb.v4l2_buf.sequence = cap->frame_count++; vb2_buffer_done(&v_buf->vb, VB2_BUF_STATE_DONE); } if (!list_empty(&cap->pending_buf_q)) { v_buf = fimc_pending_queue_pop(cap); fimc_hw_set_output_addr(fimc, &v_buf->paddr, cap->buf_index); v_buf->index = cap->buf_index; /* Move the buffer to the capture active queue */ fimc_active_queue_add(cap, v_buf); dbg("next frame: %d, done frame: %d", fimc_hw_get_frame_index(fimc), v_buf->index); if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) cap->buf_index = 0; } if (cap->active_buf_cnt == 0) { if (deq_buf) clear_bit(ST_CAPT_RUN, &fimc->state); if (++cap->buf_index >= FIMC_MAX_OUT_BUFS) cap->buf_index = 0; } else { set_bit(ST_CAPT_RUN, &fimc->state); } if (test_bit(ST_CAPT_APPLY_CFG, &fimc->state)) fimc_capture_config_update(cap->ctx); done: if (cap->active_buf_cnt == 1) { fimc_deactivate_capture(fimc); clear_bit(ST_CAPT_STREAM, &fimc->state); } dbg("frame: %d, active_buf_cnt: %d", fimc_hw_get_frame_index(fimc), cap->active_buf_cnt); } static int start_streaming(struct vb2_queue *q, unsigned int count) { struct fimc_ctx *ctx = q->drv_priv; struct fimc_dev *fimc = ctx->fimc_dev; struct fimc_vid_cap *vid_cap = &fimc->vid_cap; int min_bufs; int ret; vid_cap->frame_count = 0; ret = fimc_capture_hw_init(fimc); if (ret) { fimc_capture_state_cleanup(fimc, false); return ret; } set_bit(ST_CAPT_PEND, &fimc->state); min_bufs = fimc->vid_cap.reqbufs_count > 1 ? 2 : 1; if (vid_cap->active_buf_cnt >= min_bufs && !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { fimc_activate_capture(ctx); if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) fimc_pipeline_s_stream(&fimc->pipeline, 1); } return 0; } static int stop_streaming(struct vb2_queue *q) { struct fimc_ctx *ctx = q->drv_priv; struct fimc_dev *fimc = ctx->fimc_dev; if (!fimc_capture_active(fimc)) return -EINVAL; return fimc_stop_capture(fimc, false); } int fimc_capture_suspend(struct fimc_dev *fimc) { bool suspend = fimc_capture_busy(fimc); int ret = fimc_stop_capture(fimc, suspend); if (ret) return ret; return fimc_pipeline_shutdown(&fimc->pipeline); } static void buffer_queue(struct vb2_buffer *vb); int fimc_capture_resume(struct fimc_dev *fimc) { struct fimc_vid_cap *vid_cap = &fimc->vid_cap; struct fimc_vid_buffer *buf; int i; if (!test_and_clear_bit(ST_CAPT_SUSPENDED, &fimc->state)) return 0; INIT_LIST_HEAD(&fimc->vid_cap.active_buf_q); vid_cap->buf_index = 0; fimc_pipeline_initialize(&fimc->pipeline, &vid_cap->vfd->entity, false); fimc_capture_hw_init(fimc); clear_bit(ST_CAPT_SUSPENDED, &fimc->state); for (i = 0; i < vid_cap->reqbufs_count; i++) { if (list_empty(&vid_cap->pending_buf_q)) break; buf = fimc_pending_queue_pop(vid_cap); buffer_queue(&buf->vb); } return 0; } static int queue_setup(struct vb2_queue *vq, const struct v4l2_format *pfmt, unsigned int *num_buffers, unsigned int *num_planes, unsigned int sizes[], void *allocators[]) { const struct v4l2_pix_format_mplane *pixm = NULL; struct fimc_ctx *ctx = vq->drv_priv; struct fimc_frame *frame = &ctx->d_frame; struct fimc_fmt *fmt = frame->fmt; unsigned long wh; int i; if (pfmt) { pixm = &pfmt->fmt.pix_mp; fmt = fimc_find_format(&pixm->pixelformat, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M, -1); wh = pixm->width * pixm->height; } else { wh = frame->f_width * frame->f_height; } if (fmt == NULL) return -EINVAL; *num_planes = fmt->memplanes; for (i = 0; i < fmt->memplanes; i++) { unsigned int size = (wh * fmt->depth[i]) / 8; if (pixm) sizes[i] = max(size, pixm->plane_fmt[i].sizeimage); else sizes[i] = size; allocators[i] = ctx->fimc_dev->alloc_ctx; } return 0; } static int buffer_prepare(struct vb2_buffer *vb) { struct vb2_queue *vq = vb->vb2_queue; struct fimc_ctx *ctx = vq->drv_priv; int i; if (ctx->d_frame.fmt == NULL) return -EINVAL; for (i = 0; i < ctx->d_frame.fmt->memplanes; i++) { unsigned long size = ctx->d_frame.payload[i]; if (vb2_plane_size(vb, i) < size) { v4l2_err(ctx->fimc_dev->vid_cap.vfd, "User buffer too small (%ld < %ld)\n", vb2_plane_size(vb, i), size); return -EINVAL; } vb2_set_plane_payload(vb, i, size); } return 0; } static void buffer_queue(struct vb2_buffer *vb) { struct fimc_vid_buffer *buf = container_of(vb, struct fimc_vid_buffer, vb); struct fimc_ctx *ctx = vb2_get_drv_priv(vb->vb2_queue); struct fimc_dev *fimc = ctx->fimc_dev; struct fimc_vid_cap *vid_cap = &fimc->vid_cap; unsigned long flags; int min_bufs; spin_lock_irqsave(&fimc->slock, flags); fimc_prepare_addr(ctx, &buf->vb, &ctx->d_frame, &buf->paddr); if (!test_bit(ST_CAPT_SUSPENDED, &fimc->state) && !test_bit(ST_CAPT_STREAM, &fimc->state) && vid_cap->active_buf_cnt < FIMC_MAX_OUT_BUFS) { /* Setup the buffer directly for processing. */ int buf_id = (vid_cap->reqbufs_count == 1) ? -1 : vid_cap->buf_index; fimc_hw_set_output_addr(fimc, &buf->paddr, buf_id); buf->index = vid_cap->buf_index; fimc_active_queue_add(vid_cap, buf); if (++vid_cap->buf_index >= FIMC_MAX_OUT_BUFS) vid_cap->buf_index = 0; } else { fimc_pending_queue_add(vid_cap, buf); } min_bufs = vid_cap->reqbufs_count > 1 ? 2 : 1; if (vb2_is_streaming(&vid_cap->vbq) && vid_cap->active_buf_cnt >= min_bufs && !test_and_set_bit(ST_CAPT_STREAM, &fimc->state)) { fimc_activate_capture(ctx); spin_unlock_irqrestore(&fimc->slock, flags); if (!test_and_set_bit(ST_CAPT_ISP_STREAM, &fimc->state)) fimc_pipeline_s_stream(&fimc->pipeline, 1); return; } spin_unlock_irqrestore(&fimc->slock, flags); } static void fimc_lock(struct vb2_queue *vq) { struct fimc_ctx *ctx = vb2_get_drv_priv(vq); mutex_lock(&ctx->fimc_dev->lock); } static void fimc_unlock(struct vb2_queue *vq) { struct fimc_ctx *ctx = vb2_get_drv_priv(vq); mutex_unlock(&ctx->fimc_dev->lock); } static struct vb2_ops fimc_capture_qops = { .queue_setup = queue_setup, .buf_prepare = buffer_prepare, .buf_queue = buffer_queue, .wait_prepare = fimc_unlock, .wait_finish = fimc_lock, .start_streaming = start_streaming, .stop_streaming = stop_streaming, }; /** * fimc_capture_ctrls_create - initialize the control handler * Initialize the capture video node control handler and fill it * with the FIMC controls. Inherit any sensor's controls if the * 'user_subdev_api' flag is false (default behaviour). * This function need to be called with the graph mutex held. */ int fimc_capture_ctrls_create(struct fimc_dev *fimc) { struct fimc_vid_cap *vid_cap = &fimc->vid_cap; int ret; if (WARN_ON(vid_cap->ctx == NULL)) return -ENXIO; if (vid_cap->ctx->ctrls.ready) return 0; ret = fimc_ctrls_create(vid_cap->ctx); if (ret || vid_cap->user_subdev_api || !vid_cap->ctx->ctrls.ready) return ret; return v4l2_ctrl_add_handler(&vid_cap->ctx->ctrls.handler, fimc->pipeline.subdevs[IDX_SENSOR]->ctrl_handler); } static int fimc_capture_set_default_format(struct fimc_dev *fimc); static int fimc_capture_open(struct file *file) { struct fimc_dev *fimc = video_drvdata(file); int ret = v4l2_fh_open(file); if (ret) return ret; dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); /* Return if the corresponding video mem2mem node is already opened. */ if (fimc_m2m_active(fimc)) return -EBUSY; set_bit(ST_CAPT_BUSY, &fimc->state); pm_runtime_get_sync(&fimc->pdev->dev); if (++fimc->vid_cap.refcnt == 1) { ret = fimc_pipeline_initialize(&fimc->pipeline, &fimc->vid_cap.vfd->entity, true); if (ret < 0) { dev_err(&fimc->pdev->dev, "Video pipeline initialization failed\n"); pm_runtime_put_sync(&fimc->pdev->dev); fimc->vid_cap.refcnt--; v4l2_fh_release(file); clear_bit(ST_CAPT_BUSY, &fimc->state); return ret; } ret = fimc_capture_ctrls_create(fimc); if (!ret && !fimc->vid_cap.user_subdev_api) ret = fimc_capture_set_default_format(fimc); } return ret; } static int fimc_capture_close(struct file *file) { struct fimc_dev *fimc = video_drvdata(file); dbg("pid: %d, state: 0x%lx", task_pid_nr(current), fimc->state); if (--fimc->vid_cap.refcnt == 0) { clear_bit(ST_CAPT_BUSY, &fimc->state); fimc_stop_capture(fimc, false); fimc_pipeline_shutdown(&fimc->pipeline); clear_bit(ST_CAPT_SUSPENDED, &fimc->state); } pm_runtime_put(&fimc->pdev->dev); if (fimc->vid_cap.refcnt == 0) { vb2_queue_release(&fimc->vid_cap.vbq); fimc_ctrls_delete(fimc->vid_cap.ctx); } return v4l2_fh_release(file); } static unsigned int fimc_capture_poll(struct file *file, struct poll_table_struct *wait) { struct fimc_dev *fimc = video_drvdata(file); return vb2_poll(&fimc->vid_cap.vbq, file, wait); } static int fimc_capture_mmap(struct file *file, struct vm_area_struct *vma) { struct fimc_dev *fimc = video_drvdata(file); return vb2_mmap(&fimc->vid_cap.vbq, vma); } static const struct v4l2_file_operations fimc_capture_fops = { .owner = THIS_MODULE, .open = fimc_capture_open, .release = fimc_capture_close, .poll = fimc_capture_poll, .unlocked_ioctl = video_ioctl2, .mmap = fimc_capture_mmap, }; /* * Format and crop negotiation helpers */ static struct fimc_fmt *fimc_capture_try_format(struct fimc_ctx *ctx, u32 *width, u32 *height, u32 *code, u32 *fourcc, int pad) { bool rotation = ctx->rotation == 90 || ctx->rotation == 270; struct fimc_dev *fimc = ctx->fimc_dev; struct fimc_variant *var = fimc->variant; struct fimc_pix_limit *pl = var->pix_limit; struct fimc_frame *dst = &ctx->d_frame; u32 depth, min_w, max_w, min_h, align_h = 3; u32 mask = FMT_FLAGS_CAM; struct fimc_fmt *ffmt; /* Color conversion from/to JPEG is not supported */ if (code && ctx->s_frame.fmt && pad == FIMC_SD_PAD_SOURCE && fimc_fmt_is_jpeg(ctx->s_frame.fmt->color)) *code = V4L2_MBUS_FMT_JPEG_1X8; if (fourcc && *fourcc != V4L2_PIX_FMT_JPEG && pad != FIMC_SD_PAD_SINK) mask |= FMT_FLAGS_M2M; ffmt = fimc_find_format(fourcc, code, mask, 0); if (WARN_ON(!ffmt)) return NULL; if (code) *code = ffmt->mbus_code; if (fourcc) *fourcc = ffmt->fourcc; if (pad == FIMC_SD_PAD_SINK) { max_w = fimc_fmt_is_jpeg(ffmt->color) ? pl->scaler_dis_w : pl->scaler_en_w; /* Apply the camera input interface pixel constraints */ v4l_bound_align_image(width, max_t(u32, *width, 32), max_w, 4, height, max_t(u32, *height, 32), FIMC_CAMIF_MAX_HEIGHT, fimc_fmt_is_jpeg(ffmt->color) ? 3 : 1, 0); return ffmt; } /* Can't scale or crop in transparent (JPEG) transfer mode */ if (fimc_fmt_is_jpeg(ffmt->color)) { *width = ctx->s_frame.f_width; *height = ctx->s_frame.f_height; return ffmt; } /* Apply the scaler and the output DMA constraints */ max_w = rotation ? pl->out_rot_en_w : pl->out_rot_dis_w; if (ctx->state & FIMC_COMPOSE) { min_w = dst->offs_h + dst->width; min_h = dst->offs_v + dst->height; } else { min_w = var->min_out_pixsize; min_h = var->min_out_pixsize; } if (var->min_vsize_align == 1 && !rotation) align_h = fimc_fmt_is_rgb(ffmt->color) ? 0 : 1; depth = fimc_get_format_depth(ffmt); v4l_bound_align_image(width, min_w, max_w, ffs(var->min_out_pixsize) - 1, height, min_h, FIMC_CAMIF_MAX_HEIGHT, align_h, 64/(ALIGN(depth, 8))); dbg("pad%d: code: 0x%x, %dx%d. dst fmt: %dx%d", pad, code ? *code : 0, *width, *height, dst->f_width, dst->f_height); return ffmt; } static void fimc_capture_try_selection(struct fimc_ctx *ctx, struct v4l2_rect *r, int target) { bool rotate = ctx->rotation == 90 || ctx->rotation == 270; struct fimc_dev *fimc = ctx->fimc_dev; struct fimc_variant *var = fimc->variant; struct fimc_pix_limit *pl = var->pix_limit; struct fimc_frame *sink = &ctx->s_frame; u32 max_w, max_h, min_w = 0, min_h = 0, min_sz; u32 align_sz = 0, align_h = 4; u32 max_sc_h, max_sc_v; /* In JPEG transparent transfer mode cropping is not supported */ if (fimc_fmt_is_jpeg(ctx->d_frame.fmt->color)) { r->width = sink->f_width; r->height = sink->f_height; r->left = r->top = 0; return; } if (target == V4L2_SEL_TGT_COMPOSE) { if (ctx->rotation != 90 && ctx->rotation != 270) align_h = 1; max_sc_h = min(SCALER_MAX_HRATIO, 1 << (ffs(sink->width) - 3)); max_sc_v = min(SCALER_MAX_VRATIO, 1 << (ffs(sink->height) - 1)); min_sz = var->min_out_pixsize; } else { u32 depth = fimc_get_format_depth(sink->fmt); align_sz = 64/ALIGN(depth, 8); min_sz = var->min_inp_pixsize; min_w = min_h = min_sz; max_sc_h = max_sc_v = 1; } /* * For the compose rectangle the following constraints must be met: * - it must fit in the sink pad format rectangle (f_width/f_height); * - maximum downscaling ratio is 64; * - maximum crop size depends if the rotator is used or not; * - the sink pad format width/height must be 4 multiple of the * prescaler ratios determined by sink pad size and source pad crop, * the prescaler ratio is returned by fimc_get_scaler_factor(). */ max_w = min_t(u32, rotate ? pl->out_rot_en_w : pl->out_rot_dis_w, rotate ? sink->f_height : sink->f_width); max_h = min_t(u32, FIMC_CAMIF_MAX_HEIGHT, sink->f_height); if (target == V4L2_SEL_TGT_COMPOSE) { min_w = min_t(u32, max_w, sink->f_width / max_sc_h); min_h = min_t(u32, max_h, sink->f_height / max_sc_v); if (rotate) { swap(max_sc_h, max_sc_v); swap(min_w, min_h); } } v4l_bound_align_image(&r->width, min_w, max_w, ffs(min_sz) - 1, &r->height, min_h, max_h, align_h, align_sz); /* Adjust left/top if crop/compose rectangle is out of bounds */ r->left = clamp_t(u32, r->left, 0, sink->f_width - r->width); r->top = clamp_t(u32, r->top, 0, sink->f_height - r->height); r->left = round_down(r->left, var->hor_offs_align); dbg("target %#x: (%d,%d)/%dx%d, sink fmt: %dx%d", target, r->left, r->top, r->width, r->height, sink->f_width, sink->f_height); } /* * The video node ioctl operations */ static int fimc_vidioc_querycap_capture(struct file *file, void *priv, struct v4l2_capability *cap) { struct fimc_dev *fimc = video_drvdata(file); strncpy(cap->driver, fimc->pdev->name, sizeof(cap->driver) - 1); strncpy(cap->card, fimc->pdev->name, sizeof(cap->card) - 1); cap->bus_info[0] = 0; cap->capabilities = V4L2_CAP_STREAMING | V4L2_CAP_VIDEO_CAPTURE_MPLANE; return 0; } static int fimc_cap_enum_fmt_mplane(struct file *file, void *priv, struct v4l2_fmtdesc *f) { struct fimc_fmt *fmt; fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM | FMT_FLAGS_M2M, f->index); if (!fmt) return -EINVAL; strncpy(f->description, fmt->name, sizeof(f->description) - 1); f->pixelformat = fmt->fourcc; if (fmt->fourcc == V4L2_MBUS_FMT_JPEG_1X8) f->flags |= V4L2_FMT_FLAG_COMPRESSED; return 0; } /** * fimc_pipeline_try_format - negotiate and/or set formats at pipeline * elements * @ctx: FIMC capture context * @tfmt: media bus format to try/set on subdevs * @fmt_id: fimc pixel format id corresponding to returned @tfmt (output) * @set: true to set format on subdevs, false to try only */ static int fimc_pipeline_try_format(struct fimc_ctx *ctx, struct v4l2_mbus_framefmt *tfmt, struct fimc_fmt **fmt_id, bool set) { struct fimc_dev *fimc = ctx->fimc_dev; struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; struct v4l2_subdev *csis = fimc->pipeline.subdevs[IDX_CSIS]; struct v4l2_subdev_format sfmt; struct v4l2_mbus_framefmt *mf = &sfmt.format; struct fimc_fmt *ffmt = NULL; int ret, i = 0; if (WARN_ON(!sd || !tfmt)) return -EINVAL; memset(&sfmt, 0, sizeof(sfmt)); sfmt.format = *tfmt; sfmt.which = set ? V4L2_SUBDEV_FORMAT_ACTIVE : V4L2_SUBDEV_FORMAT_TRY; while (1) { ffmt = fimc_find_format(NULL, mf->code != 0 ? &mf->code : NULL, FMT_FLAGS_CAM, i++); if (ffmt == NULL) { /* * Notify user-space if common pixel code for * host and sensor does not exist. */ return -EINVAL; } mf->code = tfmt->code = ffmt->mbus_code; ret = v4l2_subdev_call(sd, pad, set_fmt, NULL, &sfmt); if (ret) return ret; if (mf->code != tfmt->code) { mf->code = 0; continue; } if (mf->width != tfmt->width || mf->height != tfmt->height) { u32 fcc = ffmt->fourcc; tfmt->width = mf->width; tfmt->height = mf->height; ffmt = fimc_capture_try_format(ctx, &tfmt->width, &tfmt->height, NULL, &fcc, FIMC_SD_PAD_SOURCE); if (ffmt && ffmt->mbus_code) mf->code = ffmt->mbus_code; if (mf->width != tfmt->width || mf->height != tfmt->height) continue; tfmt->code = mf->code; } if (csis) ret = v4l2_subdev_call(csis, pad, set_fmt, NULL, &sfmt); if (mf->code == tfmt->code && mf->width == tfmt->width && mf->height == tfmt->height) break; } if (fmt_id && ffmt) *fmt_id = ffmt; *tfmt = *mf; dbg("code: 0x%x, %dx%d, %p", mf->code, mf->width, mf->height, ffmt); return 0; } static int fimc_cap_g_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { struct fimc_dev *fimc = video_drvdata(file); struct fimc_ctx *ctx = fimc->vid_cap.ctx; if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; return fimc_fill_format(&ctx->d_frame, f); } static int fimc_cap_try_fmt_mplane(struct file *file, void *fh, struct v4l2_format *f) { struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; struct fimc_dev *fimc = video_drvdata(file); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct v4l2_mbus_framefmt mf; struct fimc_fmt *ffmt = NULL; if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; if (pix->pixelformat == V4L2_PIX_FMT_JPEG) { fimc_capture_try_format(ctx, &pix->width, &pix->height, NULL, &pix->pixelformat, FIMC_SD_PAD_SINK); ctx->s_frame.f_width = pix->width; ctx->s_frame.f_height = pix->height; } ffmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, NULL, &pix->pixelformat, FIMC_SD_PAD_SOURCE); if (!ffmt) return -EINVAL; if (!fimc->vid_cap.user_subdev_api) { mf.width = pix->width; mf.height = pix->height; mf.code = ffmt->mbus_code; fimc_md_graph_lock(fimc); fimc_pipeline_try_format(ctx, &mf, &ffmt, false); fimc_md_graph_unlock(fimc); pix->width = mf.width; pix->height = mf.height; if (ffmt) pix->pixelformat = ffmt->fourcc; } fimc_adjust_mplane_format(ffmt, pix->width, pix->height, pix); return 0; } static void fimc_capture_mark_jpeg_xfer(struct fimc_ctx *ctx, bool jpeg) { ctx->scaler.enabled = !jpeg; fimc_ctrls_activate(ctx, !jpeg); if (jpeg) set_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); else clear_bit(ST_CAPT_JPEG, &ctx->fimc_dev->state); } static int fimc_capture_set_format(struct fimc_dev *fimc, struct v4l2_format *f) { struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct v4l2_pix_format_mplane *pix = &f->fmt.pix_mp; struct v4l2_mbus_framefmt *mf = &fimc->vid_cap.mf; struct fimc_frame *ff = &ctx->d_frame; struct fimc_fmt *s_fmt = NULL; int ret, i; if (f->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; if (vb2_is_busy(&fimc->vid_cap.vbq)) return -EBUSY; /* Pre-configure format at camera interface input, for JPEG only */ if (pix->pixelformat == V4L2_PIX_FMT_JPEG) { fimc_capture_try_format(ctx, &pix->width, &pix->height, NULL, &pix->pixelformat, FIMC_SD_PAD_SINK); ctx->s_frame.f_width = pix->width; ctx->s_frame.f_height = pix->height; } /* Try the format at the scaler and the DMA output */ ff->fmt = fimc_capture_try_format(ctx, &pix->width, &pix->height, NULL, &pix->pixelformat, FIMC_SD_PAD_SOURCE); if (!ff->fmt) return -EINVAL; /* Update RGB Alpha control state and value range */ fimc_alpha_ctrl_update(ctx); /* Try to match format at the host and the sensor */ if (!fimc->vid_cap.user_subdev_api) { mf->code = ff->fmt->mbus_code; mf->width = pix->width; mf->height = pix->height; fimc_md_graph_lock(fimc); ret = fimc_pipeline_try_format(ctx, mf, &s_fmt, true); fimc_md_graph_unlock(fimc); if (ret) return ret; pix->width = mf->width; pix->height = mf->height; } fimc_adjust_mplane_format(ff->fmt, pix->width, pix->height, pix); for (i = 0; i < ff->fmt->colplanes; i++) ff->payload[i] = (pix->width * pix->height * ff->fmt->depth[i]) / 8; set_frame_bounds(ff, pix->width, pix->height); /* Reset the composition rectangle if not yet configured */ if (!(ctx->state & FIMC_COMPOSE)) set_frame_crop(ff, 0, 0, pix->width, pix->height); fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ff->fmt->color)); /* Reset cropping and set format at the camera interface input */ if (!fimc->vid_cap.user_subdev_api) { ctx->s_frame.fmt = s_fmt; set_frame_bounds(&ctx->s_frame, pix->width, pix->height); set_frame_crop(&ctx->s_frame, 0, 0, pix->width, pix->height); } return ret; } static int fimc_cap_s_fmt_mplane(struct file *file, void *priv, struct v4l2_format *f) { struct fimc_dev *fimc = video_drvdata(file); return fimc_capture_set_format(fimc, f); } static int fimc_cap_enum_input(struct file *file, void *priv, struct v4l2_input *i) { struct fimc_dev *fimc = video_drvdata(file); struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; if (i->index != 0) return -EINVAL; i->type = V4L2_INPUT_TYPE_CAMERA; if (sd) strlcpy(i->name, sd->name, sizeof(i->name)); return 0; } static int fimc_cap_s_input(struct file *file, void *priv, unsigned int i) { return i == 0 ? i : -EINVAL; } static int fimc_cap_g_input(struct file *file, void *priv, unsigned int *i) { *i = 0; return 0; } /** * fimc_pipeline_validate - check for formats inconsistencies * between source and sink pad of each link * * Return 0 if all formats match or -EPIPE otherwise. */ static int fimc_pipeline_validate(struct fimc_dev *fimc) { struct v4l2_subdev_format sink_fmt, src_fmt; struct fimc_vid_cap *vid_cap = &fimc->vid_cap; struct v4l2_subdev *sd; struct media_pad *pad; int ret; /* Start with the video capture node pad */ pad = media_entity_remote_source(&vid_cap->vd_pad); if (pad == NULL) return -EPIPE; /* FIMC.{N} subdevice */ sd = media_entity_to_v4l2_subdev(pad->entity); while (1) { /* Retrieve format at the sink pad */ pad = &sd->entity.pads[0]; if (!(pad->flags & MEDIA_PAD_FL_SINK)) break; /* Don't call FIMC subdev operation to avoid nested locking */ if (sd == &fimc->vid_cap.subdev) { struct fimc_frame *ff = &vid_cap->ctx->s_frame; sink_fmt.format.width = ff->f_width; sink_fmt.format.height = ff->f_height; sink_fmt.format.code = ff->fmt ? ff->fmt->mbus_code : 0; } else { sink_fmt.pad = pad->index; sink_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &sink_fmt); if (ret < 0 && ret != -ENOIOCTLCMD) return -EPIPE; } /* Retrieve format at the source pad */ pad = media_entity_remote_source(pad); if (pad == NULL || media_entity_type(pad->entity) != MEDIA_ENT_T_V4L2_SUBDEV) break; sd = media_entity_to_v4l2_subdev(pad->entity); src_fmt.pad = pad->index; src_fmt.which = V4L2_SUBDEV_FORMAT_ACTIVE; ret = v4l2_subdev_call(sd, pad, get_fmt, NULL, &src_fmt); if (ret < 0 && ret != -ENOIOCTLCMD) return -EPIPE; if (src_fmt.format.width != sink_fmt.format.width || src_fmt.format.height != sink_fmt.format.height || src_fmt.format.code != sink_fmt.format.code) return -EPIPE; } return 0; } static int fimc_cap_streamon(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_dev *fimc = video_drvdata(file); struct fimc_pipeline *p = &fimc->pipeline; int ret; if (fimc_capture_active(fimc)) return -EBUSY; media_entity_pipeline_start(&p->subdevs[IDX_SENSOR]->entity, p->m_pipeline); if (fimc->vid_cap.user_subdev_api) { ret = fimc_pipeline_validate(fimc); if (ret) return ret; } return vb2_streamon(&fimc->vid_cap.vbq, type); } static int fimc_cap_streamoff(struct file *file, void *priv, enum v4l2_buf_type type) { struct fimc_dev *fimc = video_drvdata(file); struct v4l2_subdev *sd = fimc->pipeline.subdevs[IDX_SENSOR]; int ret; ret = vb2_streamoff(&fimc->vid_cap.vbq, type); if (ret == 0) media_entity_pipeline_stop(&sd->entity); return ret; } static int fimc_cap_reqbufs(struct file *file, void *priv, struct v4l2_requestbuffers *reqbufs) { struct fimc_dev *fimc = video_drvdata(file); int ret = vb2_reqbufs(&fimc->vid_cap.vbq, reqbufs); if (!ret) fimc->vid_cap.reqbufs_count = reqbufs->count; return ret; } static int fimc_cap_querybuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_dev *fimc = video_drvdata(file); return vb2_querybuf(&fimc->vid_cap.vbq, buf); } static int fimc_cap_qbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_dev *fimc = video_drvdata(file); return vb2_qbuf(&fimc->vid_cap.vbq, buf); } static int fimc_cap_dqbuf(struct file *file, void *priv, struct v4l2_buffer *buf) { struct fimc_dev *fimc = video_drvdata(file); return vb2_dqbuf(&fimc->vid_cap.vbq, buf, file->f_flags & O_NONBLOCK); } static int fimc_cap_create_bufs(struct file *file, void *priv, struct v4l2_create_buffers *create) { struct fimc_dev *fimc = video_drvdata(file); return vb2_create_bufs(&fimc->vid_cap.vbq, create); } static int fimc_cap_prepare_buf(struct file *file, void *priv, struct v4l2_buffer *b) { struct fimc_dev *fimc = video_drvdata(file); return vb2_prepare_buf(&fimc->vid_cap.vbq, b); } static int fimc_cap_g_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct fimc_dev *fimc = video_drvdata(file); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct fimc_frame *f = &ctx->s_frame; if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; switch (s->target) { case V4L2_SEL_TGT_COMPOSE_DEFAULT: case V4L2_SEL_TGT_COMPOSE_BOUNDS: f = &ctx->d_frame; case V4L2_SEL_TGT_CROP_BOUNDS: case V4L2_SEL_TGT_CROP_DEFAULT: s->r.left = 0; s->r.top = 0; s->r.width = f->o_width; s->r.height = f->o_height; return 0; case V4L2_SEL_TGT_COMPOSE: f = &ctx->d_frame; case V4L2_SEL_TGT_CROP: s->r.left = f->offs_h; s->r.top = f->offs_v; s->r.width = f->width; s->r.height = f->height; return 0; } return -EINVAL; } /* Return 1 if rectangle a is enclosed in rectangle b, or 0 otherwise. */ static int enclosed_rectangle(struct v4l2_rect *a, struct v4l2_rect *b) { if (a->left < b->left || a->top < b->top) return 0; if (a->left + a->width > b->left + b->width) return 0; if (a->top + a->height > b->top + b->height) return 0; return 1; } static int fimc_cap_s_selection(struct file *file, void *fh, struct v4l2_selection *s) { struct fimc_dev *fimc = video_drvdata(file); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct v4l2_rect rect = s->r; struct fimc_frame *f; unsigned long flags; if (s->type != V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE) return -EINVAL; if (s->target == V4L2_SEL_TGT_COMPOSE) f = &ctx->d_frame; else if (s->target == V4L2_SEL_TGT_CROP) f = &ctx->s_frame; else return -EINVAL; fimc_capture_try_selection(ctx, &rect, s->target); if (s->flags & V4L2_SEL_FLAG_LE && !enclosed_rectangle(&rect, &s->r)) return -ERANGE; if (s->flags & V4L2_SEL_FLAG_GE && !enclosed_rectangle(&s->r, &rect)) return -ERANGE; s->r = rect; spin_lock_irqsave(&fimc->slock, flags); set_frame_crop(f, s->r.left, s->r.top, s->r.width, s->r.height); spin_unlock_irqrestore(&fimc->slock, flags); set_bit(ST_CAPT_APPLY_CFG, &fimc->state); return 0; } static const struct v4l2_ioctl_ops fimc_capture_ioctl_ops = { .vidioc_querycap = fimc_vidioc_querycap_capture, .vidioc_enum_fmt_vid_cap_mplane = fimc_cap_enum_fmt_mplane, .vidioc_try_fmt_vid_cap_mplane = fimc_cap_try_fmt_mplane, .vidioc_s_fmt_vid_cap_mplane = fimc_cap_s_fmt_mplane, .vidioc_g_fmt_vid_cap_mplane = fimc_cap_g_fmt_mplane, .vidioc_reqbufs = fimc_cap_reqbufs, .vidioc_querybuf = fimc_cap_querybuf, .vidioc_qbuf = fimc_cap_qbuf, .vidioc_dqbuf = fimc_cap_dqbuf, .vidioc_prepare_buf = fimc_cap_prepare_buf, .vidioc_create_bufs = fimc_cap_create_bufs, .vidioc_streamon = fimc_cap_streamon, .vidioc_streamoff = fimc_cap_streamoff, .vidioc_g_selection = fimc_cap_g_selection, .vidioc_s_selection = fimc_cap_s_selection, .vidioc_enum_input = fimc_cap_enum_input, .vidioc_s_input = fimc_cap_s_input, .vidioc_g_input = fimc_cap_g_input, }; /* Capture subdev media entity operations */ static int fimc_link_setup(struct media_entity *entity, const struct media_pad *local, const struct media_pad *remote, u32 flags) { struct v4l2_subdev *sd = media_entity_to_v4l2_subdev(entity); struct fimc_dev *fimc = v4l2_get_subdevdata(sd); if (media_entity_type(remote->entity) != MEDIA_ENT_T_V4L2_SUBDEV) return -EINVAL; if (WARN_ON(fimc == NULL)) return 0; dbg("%s --> %s, flags: 0x%x. input: 0x%x", local->entity->name, remote->entity->name, flags, fimc->vid_cap.input); if (flags & MEDIA_LNK_FL_ENABLED) { if (fimc->vid_cap.input != 0) return -EBUSY; fimc->vid_cap.input = sd->grp_id; return 0; } fimc->vid_cap.input = 0; return 0; } static const struct media_entity_operations fimc_sd_media_ops = { .link_setup = fimc_link_setup, }; /** * fimc_sensor_notify - v4l2_device notification from a sensor subdev * @sd: pointer to a subdev generating the notification * @notification: the notification type, must be S5P_FIMC_TX_END_NOTIFY * @arg: pointer to an u32 type integer that stores the frame payload value * * The End Of Frame notification sent by sensor subdev in its still capture * mode. If there is only a single VSYNC generated by the sensor at the * beginning of a frame transmission, FIMC does not issue the LastIrq * (end of frame) interrupt. And this notification is used to complete the * frame capture and returning a buffer to user-space. Subdev drivers should * call this notification from their last 'End of frame capture' interrupt. */ void fimc_sensor_notify(struct v4l2_subdev *sd, unsigned int notification, void *arg) { struct fimc_sensor_info *sensor; struct fimc_vid_buffer *buf; struct fimc_md *fmd; struct fimc_dev *fimc; unsigned long flags; if (sd == NULL) return; sensor = v4l2_get_subdev_hostdata(sd); fmd = entity_to_fimc_mdev(&sd->entity); spin_lock_irqsave(&fmd->slock, flags); fimc = sensor ? sensor->host : NULL; if (fimc && arg && notification == S5P_FIMC_TX_END_NOTIFY && test_bit(ST_CAPT_PEND, &fimc->state)) { unsigned long irq_flags; spin_lock_irqsave(&fimc->slock, irq_flags); if (!list_empty(&fimc->vid_cap.active_buf_q)) { buf = list_entry(fimc->vid_cap.active_buf_q.next, struct fimc_vid_buffer, list); vb2_set_plane_payload(&buf->vb, 0, *((u32 *)arg)); } fimc_capture_irq_handler(fimc, 1); fimc_deactivate_capture(fimc); spin_unlock_irqrestore(&fimc->slock, irq_flags); } spin_unlock_irqrestore(&fmd->slock, flags); } static int fimc_subdev_enum_mbus_code(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_mbus_code_enum *code) { struct fimc_fmt *fmt; fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, code->index); if (!fmt) return -EINVAL; code->code = fmt->mbus_code; return 0; } static int fimc_subdev_get_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct v4l2_mbus_framefmt *mf; struct fimc_frame *ff; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { mf = v4l2_subdev_get_try_format(fh, fmt->pad); fmt->format = *mf; return 0; } mf = &fmt->format; mf->colorspace = V4L2_COLORSPACE_JPEG; ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame; mutex_lock(&fimc->lock); /* The pixel code is same on both input and output pad */ if (!WARN_ON(ctx->s_frame.fmt == NULL)) mf->code = ctx->s_frame.fmt->mbus_code; mf->width = ff->f_width; mf->height = ff->f_height; mutex_unlock(&fimc->lock); return 0; } static int fimc_subdev_set_fmt(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_format *fmt) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); struct v4l2_mbus_framefmt *mf = &fmt->format; struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct fimc_frame *ff; struct fimc_fmt *ffmt; dbg("pad%d: code: 0x%x, %dx%d", fmt->pad, mf->code, mf->width, mf->height); if (fmt->pad == FIMC_SD_PAD_SOURCE && vb2_is_busy(&fimc->vid_cap.vbq)) return -EBUSY; mutex_lock(&fimc->lock); ffmt = fimc_capture_try_format(ctx, &mf->width, &mf->height, &mf->code, NULL, fmt->pad); mutex_unlock(&fimc->lock); mf->colorspace = V4L2_COLORSPACE_JPEG; if (fmt->which == V4L2_SUBDEV_FORMAT_TRY) { mf = v4l2_subdev_get_try_format(fh, fmt->pad); *mf = fmt->format; return 0; } /* Update RGB Alpha control state and value range */ fimc_alpha_ctrl_update(ctx); fimc_capture_mark_jpeg_xfer(ctx, fimc_fmt_is_jpeg(ffmt->color)); ff = fmt->pad == FIMC_SD_PAD_SINK ? &ctx->s_frame : &ctx->d_frame; mutex_lock(&fimc->lock); set_frame_bounds(ff, mf->width, mf->height); fimc->vid_cap.mf = *mf; ff->fmt = ffmt; /* Reset the crop rectangle if required. */ if (!(fmt->pad == FIMC_SD_PAD_SOURCE && (ctx->state & FIMC_COMPOSE))) set_frame_crop(ff, 0, 0, mf->width, mf->height); if (fmt->pad == FIMC_SD_PAD_SINK) ctx->state &= ~FIMC_COMPOSE; mutex_unlock(&fimc->lock); return 0; } static int fimc_subdev_get_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct fimc_frame *f = &ctx->s_frame; struct v4l2_rect *r = &sel->r; struct v4l2_rect *try_sel; if (sel->pad != FIMC_SD_PAD_SINK) return -EINVAL; mutex_lock(&fimc->lock); switch (sel->target) { case V4L2_SEL_TGT_COMPOSE_BOUNDS: f = &ctx->d_frame; case V4L2_SEL_TGT_CROP_BOUNDS: r->width = f->o_width; r->height = f->o_height; r->left = 0; r->top = 0; mutex_unlock(&fimc->lock); return 0; case V4L2_SEL_TGT_CROP: try_sel = v4l2_subdev_get_try_crop(fh, sel->pad); break; case V4L2_SEL_TGT_COMPOSE: try_sel = v4l2_subdev_get_try_compose(fh, sel->pad); f = &ctx->d_frame; break; default: mutex_unlock(&fimc->lock); return -EINVAL; } if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { sel->r = *try_sel; } else { r->left = f->offs_h; r->top = f->offs_v; r->width = f->width; r->height = f->height; } dbg("target %#x: l:%d, t:%d, %dx%d, f_w: %d, f_h: %d", sel->pad, r->left, r->top, r->width, r->height, f->f_width, f->f_height); mutex_unlock(&fimc->lock); return 0; } static int fimc_subdev_set_selection(struct v4l2_subdev *sd, struct v4l2_subdev_fh *fh, struct v4l2_subdev_selection *sel) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); struct fimc_ctx *ctx = fimc->vid_cap.ctx; struct fimc_frame *f = &ctx->s_frame; struct v4l2_rect *r = &sel->r; struct v4l2_rect *try_sel; unsigned long flags; if (sel->pad != FIMC_SD_PAD_SINK) return -EINVAL; mutex_lock(&fimc->lock); fimc_capture_try_selection(ctx, r, V4L2_SEL_TGT_CROP); switch (sel->target) { case V4L2_SEL_TGT_COMPOSE_BOUNDS: f = &ctx->d_frame; case V4L2_SEL_TGT_CROP_BOUNDS: r->width = f->o_width; r->height = f->o_height; r->left = 0; r->top = 0; mutex_unlock(&fimc->lock); return 0; case V4L2_SEL_TGT_CROP: try_sel = v4l2_subdev_get_try_crop(fh, sel->pad); break; case V4L2_SEL_TGT_COMPOSE: try_sel = v4l2_subdev_get_try_compose(fh, sel->pad); f = &ctx->d_frame; break; default: mutex_unlock(&fimc->lock); return -EINVAL; } if (sel->which == V4L2_SUBDEV_FORMAT_TRY) { *try_sel = sel->r; } else { spin_lock_irqsave(&fimc->slock, flags); set_frame_crop(f, r->left, r->top, r->width, r->height); set_bit(ST_CAPT_APPLY_CFG, &fimc->state); spin_unlock_irqrestore(&fimc->slock, flags); if (sel->target == V4L2_SEL_TGT_COMPOSE) ctx->state |= FIMC_COMPOSE; } dbg("target %#x: (%d,%d)/%dx%d", sel->target, r->left, r->top, r->width, r->height); mutex_unlock(&fimc->lock); return 0; } static struct v4l2_subdev_pad_ops fimc_subdev_pad_ops = { .enum_mbus_code = fimc_subdev_enum_mbus_code, .get_selection = fimc_subdev_get_selection, .set_selection = fimc_subdev_set_selection, .get_fmt = fimc_subdev_get_fmt, .set_fmt = fimc_subdev_set_fmt, }; static struct v4l2_subdev_ops fimc_subdev_ops = { .pad = &fimc_subdev_pad_ops, }; /* Set default format at the sensor and host interface */ static int fimc_capture_set_default_format(struct fimc_dev *fimc) { struct v4l2_format fmt = { .type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE, .fmt.pix_mp = { .width = 640, .height = 480, .pixelformat = V4L2_PIX_FMT_YUYV, .field = V4L2_FIELD_NONE, .colorspace = V4L2_COLORSPACE_JPEG, }, }; return fimc_capture_set_format(fimc, &fmt); } /* fimc->lock must be already initialized */ static int fimc_register_capture_device(struct fimc_dev *fimc, struct v4l2_device *v4l2_dev) { struct video_device *vfd; struct fimc_vid_cap *vid_cap; struct fimc_ctx *ctx; struct vb2_queue *q; int ret = -ENOMEM; ctx = kzalloc(sizeof *ctx, GFP_KERNEL); if (!ctx) return -ENOMEM; ctx->fimc_dev = fimc; ctx->in_path = FIMC_IO_CAMERA; ctx->out_path = FIMC_IO_DMA; ctx->state = FIMC_CTX_CAP; ctx->s_frame.fmt = fimc_find_format(NULL, NULL, FMT_FLAGS_CAM, 0); ctx->d_frame.fmt = ctx->s_frame.fmt; vfd = video_device_alloc(); if (!vfd) { v4l2_err(v4l2_dev, "Failed to allocate video device\n"); goto err_vd_alloc; } snprintf(vfd->name, sizeof(vfd->name), "fimc.%d.capture", fimc->id); vfd->fops = &fimc_capture_fops; vfd->ioctl_ops = &fimc_capture_ioctl_ops; vfd->v4l2_dev = v4l2_dev; vfd->minor = -1; vfd->release = video_device_release; vfd->lock = &fimc->lock; /* Locking in file operations other than ioctl should be done by the driver, not the V4L2 core. This driver needs auditing so that this flag can be removed. */ set_bit(V4L2_FL_LOCK_ALL_FOPS, &vfd->flags); video_set_drvdata(vfd, fimc); vid_cap = &fimc->vid_cap; vid_cap->vfd = vfd; vid_cap->active_buf_cnt = 0; vid_cap->reqbufs_count = 0; vid_cap->refcnt = 0; INIT_LIST_HEAD(&vid_cap->pending_buf_q); INIT_LIST_HEAD(&vid_cap->active_buf_q); vid_cap->ctx = ctx; q = &fimc->vid_cap.vbq; memset(q, 0, sizeof(*q)); q->type = V4L2_BUF_TYPE_VIDEO_CAPTURE_MPLANE; q->io_modes = VB2_MMAP | VB2_USERPTR; q->drv_priv = fimc->vid_cap.ctx; q->ops = &fimc_capture_qops; q->mem_ops = &vb2_dma_contig_memops; q->buf_struct_size = sizeof(struct fimc_vid_buffer); vb2_queue_init(q); vid_cap->vd_pad.flags = MEDIA_PAD_FL_SINK; ret = media_entity_init(&vfd->entity, 1, &vid_cap->vd_pad, 0); if (ret) goto err_ent; ret = video_register_device(vfd, VFL_TYPE_GRABBER, -1); if (ret) goto err_vd; v4l2_info(v4l2_dev, "Registered %s as /dev/%s\n", vfd->name, video_device_node_name(vfd)); vfd->ctrl_handler = &ctx->ctrls.handler; return 0; err_vd: media_entity_cleanup(&vfd->entity); err_ent: video_device_release(vfd); err_vd_alloc: kfree(ctx); return ret; } static int fimc_capture_subdev_registered(struct v4l2_subdev *sd) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); int ret; ret = fimc_register_m2m_device(fimc, sd->v4l2_dev); if (ret) return ret; ret = fimc_register_capture_device(fimc, sd->v4l2_dev); if (ret) fimc_unregister_m2m_device(fimc); return ret; } static void fimc_capture_subdev_unregistered(struct v4l2_subdev *sd) { struct fimc_dev *fimc = v4l2_get_subdevdata(sd); if (fimc == NULL) return; fimc_unregister_m2m_device(fimc); if (fimc->vid_cap.vfd) { media_entity_cleanup(&fimc->vid_cap.vfd->entity); video_unregister_device(fimc->vid_cap.vfd); fimc->vid_cap.vfd = NULL; } kfree(fimc->vid_cap.ctx); fimc->vid_cap.ctx = NULL; } static const struct v4l2_subdev_internal_ops fimc_capture_sd_internal_ops = { .registered = fimc_capture_subdev_registered, .unregistered = fimc_capture_subdev_unregistered, }; int fimc_initialize_capture_subdev(struct fimc_dev *fimc) { struct v4l2_subdev *sd = &fimc->vid_cap.subdev; int ret; v4l2_subdev_init(sd, &fimc_subdev_ops); sd->flags = V4L2_SUBDEV_FL_HAS_DEVNODE; snprintf(sd->name, sizeof(sd->name), "FIMC.%d", fimc->pdev->id); fimc->vid_cap.sd_pads[FIMC_SD_PAD_SINK].flags = MEDIA_PAD_FL_SINK; fimc->vid_cap.sd_pads[FIMC_SD_PAD_SOURCE].flags = MEDIA_PAD_FL_SOURCE; ret = media_entity_init(&sd->entity, FIMC_SD_PADS_NUM, fimc->vid_cap.sd_pads, 0); if (ret) return ret; sd->entity.ops = &fimc_sd_media_ops; sd->internal_ops = &fimc_capture_sd_internal_ops; v4l2_set_subdevdata(sd, fimc); return 0; } void fimc_unregister_capture_subdev(struct fimc_dev *fimc) { struct v4l2_subdev *sd = &fimc->vid_cap.subdev; v4l2_device_unregister_subdev(sd); media_entity_cleanup(&sd->entity); v4l2_set_subdevdata(sd, NULL); }